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US20020156172A1 - Melt flow in polymers by high molecular weight fischer-tropsch wax addition - Google Patents

Melt flow in polymers by high molecular weight fischer-tropsch wax addition Download PDF

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Publication number
US20020156172A1
US20020156172A1 US10/077,608 US7760802A US2002156172A1 US 20020156172 A1 US20020156172 A1 US 20020156172A1 US 7760802 A US7760802 A US 7760802A US 2002156172 A1 US2002156172 A1 US 2002156172A1
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US
United States
Prior art keywords
polymer
wax
composition
polymers
carbon number
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Abandoned
Application number
US10/077,608
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English (en)
Inventor
William Genetti
Loren Ansell
Daniel Ryan
Jack Johnson
Eric Sirota
Paul Berlowitz
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
ExxonMobil Technology and Engineering Co
Original Assignee
Individual
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Individual filed Critical Individual
Priority to US10/077,608 priority Critical patent/US20020156172A1/en
Priority to BR0207759-0A priority patent/BR0207759A/pt
Priority to CNA028052803A priority patent/CN1492906A/zh
Priority to JP2002570632A priority patent/JP2004536893A/ja
Priority to CA002438530A priority patent/CA2438530A1/fr
Priority to ARP020100763A priority patent/AR032938A1/es
Assigned to EXXONMOBIL RESEARCH & ENGINEERING CO. reassignment EXXONMOBIL RESEARCH & ENGINEERING CO. ASSIGNMENT OF ASSIGNORS INTEREST (SEE DOCUMENT FOR DETAILS). Assignors: BERLOWITZ, PAUL JOSEPH, JOHNSON, JACK WAYNE, SIROTA, ERIC BART, RYAN, DANIEL FRANCIS, ANSELL, LOREN LEON, GENETTI, WILLIAM BERLIN
Publication of US20020156172A1 publication Critical patent/US20020156172A1/en
Abandoned legal-status Critical Current

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    • C—CHEMISTRY; METALLURGY
    • C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
    • C08L—COMPOSITIONS OF MACROMOLECULAR COMPOUNDS
    • C08L23/00—Compositions of homopolymers or copolymers of unsaturated aliphatic hydrocarbons having only one carbon-to-carbon double bond; Compositions of derivatives of such polymers
    • C08L23/02—Compositions of homopolymers or copolymers of unsaturated aliphatic hydrocarbons having only one carbon-to-carbon double bond; Compositions of derivatives of such polymers not modified by chemical after-treatment
    • C—CHEMISTRY; METALLURGY
    • C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
    • C08L—COMPOSITIONS OF MACROMOLECULAR COMPOUNDS
    • C08L101/00—Compositions of unspecified macromolecular compounds
    • C—CHEMISTRY; METALLURGY
    • C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
    • C08L—COMPOSITIONS OF MACROMOLECULAR COMPOUNDS
    • C08L23/00—Compositions of homopolymers or copolymers of unsaturated aliphatic hydrocarbons having only one carbon-to-carbon double bond; Compositions of derivatives of such polymers
    • C08L23/02—Compositions of homopolymers or copolymers of unsaturated aliphatic hydrocarbons having only one carbon-to-carbon double bond; Compositions of derivatives of such polymers not modified by chemical after-treatment
    • C08L23/04—Homopolymers or copolymers of ethene
    • C08L23/06—Polyethene
    • C—CHEMISTRY; METALLURGY
    • C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
    • C08L—COMPOSITIONS OF MACROMOLECULAR COMPOUNDS
    • C08L91/00—Compositions of oils, fats or waxes; Compositions of derivatives thereof
    • C08L91/06—Waxes

Definitions

  • the present invention relates generally to improvements in polymer processing. More particularly the invention relates to polymer compositions having enhanced melt flow while retaining the flexural strength and hardness of the base polymer by incorporating a novel processing aid in a base polymer.
  • processing aids in molding, extruding, calendaring, sheet forming or otherwise fabricating shaped articles from solid polymers is of utmost practical importance.
  • processing aids are added to the base polymer to increase the melt flow index of the polymer which decreases the energy required to extrude the polymer and permits increased throughput, thereby improving the economics of the extrusion process.
  • processing aids often detrimentally effect the mechanical properties of the articles fabricated from the polymer.
  • polymer fabricators are continually in need of new and improved processing aids that have less effect on the mechanical properties of the finished article. Indeed, it would be desirable to have available to the art techniques for improving the melt flow index of a polymer while retaining the flexural strength and hardness of the polymer.
  • One aspect of the invention comprises a polymer composition having a major amount of base polymer or mixture of polymers blended with a Fischer-Tropsch derived wax (F-T wax) in an amount sufficient to enhance the melt flow index of the base polymer while substantially retaining the flexural strength and toughness of the base polymer or mixture of polymers.
  • F-T wax Fischer-Tropsch derived wax
  • Another aspect of the invention comprises a method for improving the melt flow of a polymer or mixture of polymers while substantially retaining the flexural strength and hardness of the polymer or mixture of polymers by mixing a Fischer-Tropsch derived wax (F-T wax) with the polymer or mixture of polymers in an amount sufficient to enhance the melt flow of the polymer or polymers while substantially retaining their flexural strength and hardness.
  • F-T wax Fischer-Tropsch derived wax
  • FIGS. 1 to 3 are bar graphs demonstrating the beneficial effect of the use of F-T wax as a processing aid in accordance with the present invention.
  • the base polymers employed in the composition of the present invention are thermoplastic polymers or mixtures thereof suitable in forming rigid shaped articles by applying heat, pressure or both to the polymer or polymer mixtures.
  • process techniques include injection molding, blow molding, extrusion, calendaring, sheet forming and the like.
  • suitable polymers include polyolefins, nylon, polyesters and polycarbonates.
  • Particularly preferred polymers are semicrystalline polyolefins such as high density polyethylene, ultra high molecular weight polyethylene, polypropylene and the like.
  • the composition of the invention comprises a major amount of the base polymer.
  • the base polymer typically will comprise from about 80 wt % to about 99 wt % of the total composition.
  • composition includes a Fischer-Tropsch derived wax.
  • the Fischer-Tropsch process is well known to those skilled in the art. See for example, U.S. Pat. Nos. 5,348,982 and 5,545,674, which are incorporated herein by reference.
  • the Fischer-Tropsch process involves the reaction of a synthesis gas feed comprising hydrogen and carbon monoxide in the presence of a Fischer-Tropsch catalyst.
  • Typical catalysts include a supported or unsupported Group VIII, non-noble metal (e.g., Fe, Ni, Co) with or without a promoter (e.g., ruthenium, rhenium, hafnium, zirconium, titanium).
  • the primary product of the Fischer-Tropsch process is mainly paraffinic synthetic crude.
  • the waxy component of the crude i.e., the F-T wax
  • the F-T wax used is a 1000° F.+ boiling fraction with a carbon number of about C 40 to about C 100 , preferably a 1100° F. + boiling fraction with a carbon number between about C 54 and about C 100 and more preferably a 1300° F.+ boiling fraction with a carbon number between about C 67 and about C 100 .
  • the F-T wax is blended with the base polymer or mixture of polymers by blending techniques well known in the art.
  • the polymer and F-T wax may be blended in a Banbury mixer.
  • the amount of F-T wax included in the compositions of the invention is that amount sufficient to enhance the melt flow of the base polymer without substantially decreasing the flexural strength and hardness of the base polymer.
  • sufficient F-T wax is added to increase the melt index of the polymer while retaining about 93% of the Rockwell Hardness and about 92% of the flexural strength of the polymer.
  • composition will contain from about 1 to about 20 wt % of the F-T wax.
  • Each of the processing aids were blended with the HDPE in a 2 pound Banbury melt mixer at 5 and 10 wt % levels to produce a uniform dispersion in the polymer pellets. Plaques for each HDPE blend were also prepared by compression molding for testing as described hereinafter.
  • the melt index (MI) of the pellets was measured by ASTM D-1238 at 190° C. and 2.16 kg for 10 minutes.
  • the MI of the HDPE alone was also measured for comparative purposes. The results are shown in FIG. 1. As can be seen from FIG. 1 all of the processing aids increased the MI.

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  • Chemical & Material Sciences (AREA)
  • Health & Medical Sciences (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • Medicinal Chemistry (AREA)
  • Polymers & Plastics (AREA)
  • Organic Chemistry (AREA)
  • Oil, Petroleum & Natural Gas (AREA)
  • Compositions Of Macromolecular Compounds (AREA)
US10/077,608 2001-03-02 2002-02-15 Melt flow in polymers by high molecular weight fischer-tropsch wax addition Abandoned US20020156172A1 (en)

Priority Applications (6)

Application Number Priority Date Filing Date Title
US10/077,608 US20020156172A1 (en) 2001-03-02 2002-02-15 Melt flow in polymers by high molecular weight fischer-tropsch wax addition
BR0207759-0A BR0207759A (pt) 2001-03-02 2002-02-15 Composição polimérica, e, método para melhorar o fluxo metálico do polìmero termoplástico adequado para a formação de artigos rigidos formatados
CNA028052803A CN1492906A (zh) 2001-03-02 2002-02-15 通过添加高分子量的费托蜡改进聚合物的熔体流动
JP2002570632A JP2004536893A (ja) 2001-03-02 2002-02-15 高分子量フィッシャー・−トロプシュワックスを添加することによるポリマーのメルトフローの向上
CA002438530A CA2438530A1 (fr) 2001-03-02 2002-02-15 Amelioration de l'indice de fluidite des polymeres par adjonction de cires fischer-tropsch presentant un poids moleculaire eleve
ARP020100763A AR032938A1 (es) 2001-03-02 2002-03-01 Flujo fundido en polimeros mejorado con el agregado de ceras fischer-tropsch de alto peso molecular y metodo para mejorar el flujo de fundido.

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
US27273401P 2001-03-02 2001-03-02
US10/077,608 US20020156172A1 (en) 2001-03-02 2002-02-15 Melt flow in polymers by high molecular weight fischer-tropsch wax addition

Publications (1)

Publication Number Publication Date
US20020156172A1 true US20020156172A1 (en) 2002-10-24

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US10/077,608 Abandoned US20020156172A1 (en) 2001-03-02 2002-02-15 Melt flow in polymers by high molecular weight fischer-tropsch wax addition

Country Status (8)

Country Link
US (1) US20020156172A1 (fr)
JP (1) JP2004536893A (fr)
CN (1) CN1492906A (fr)
AR (1) AR032938A1 (fr)
BR (1) BR0207759A (fr)
CA (1) CA2438530A1 (fr)
WO (1) WO2002070601A1 (fr)
ZA (1) ZA200306207B (fr)

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2005061604A1 (fr) * 2003-12-24 2005-07-07 Gale Pacific Limited Matiere plastique polymere et son procede de production
US20060148960A1 (en) * 2003-04-15 2006-07-06 Rolf Muller Polymer networks
CN102382344A (zh) * 2010-09-01 2012-03-21 中国石油化工股份有限公司 一种用于制备超高分子量聚乙烯管材的组合物及其制法

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN109852231B (zh) * 2019-01-31 2021-04-20 湖南华曙高科技有限责任公司 一种高分子聚合物粉末材料

Family Cites Families (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB1037183A (en) * 1962-05-11 1966-07-27 Celanese Corp Thermoplastic compositions
AU2619199A (en) * 1998-01-27 1999-08-09 Schumann Sasol (South Africa) (Proprietary) Limited Treatment of waxes

Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US20060148960A1 (en) * 2003-04-15 2006-07-06 Rolf Muller Polymer networks
US8202929B2 (en) * 2003-04-15 2012-06-19 Innogel Ag Polymer networks
WO2005061604A1 (fr) * 2003-12-24 2005-07-07 Gale Pacific Limited Matiere plastique polymere et son procede de production
US20060280939A1 (en) * 2003-12-24 2006-12-14 Gale Pacific Limited Polymeric plastics material and manufacture thereof
CN102382344A (zh) * 2010-09-01 2012-03-21 中国石油化工股份有限公司 一种用于制备超高分子量聚乙烯管材的组合物及其制法

Also Published As

Publication number Publication date
CN1492906A (zh) 2004-04-28
AR032938A1 (es) 2003-12-03
JP2004536893A (ja) 2004-12-09
BR0207759A (pt) 2004-04-27
CA2438530A1 (fr) 2002-09-12
ZA200306207B (en) 2004-09-09
WO2002070601A1 (fr) 2002-09-12

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Owner name: EXXONMOBIL RESEARCH & ENGINEERING CO., NEW JERSEY

Free format text: ASSIGNMENT OF ASSIGNORS INTEREST;ASSIGNORS:GENETTI, WILLIAM BERLIN;ANSELL, LOREN LEON;RYAN, DANIEL FRANCIS;AND OTHERS;REEL/FRAME:012457/0550;SIGNING DATES FROM 20020115 TO 20020205

STCB Information on status: application discontinuation

Free format text: EXPRESSLY ABANDONED -- DURING EXAMINATION